Chain



May l5, 1928. 1,670,132

c. AUGENSTEIN ET' AL CHAIN Filed Dec. 9, 1926 ATTORNEYS.

Patented May 15, v1928.`

CARI. AuGENsTnIN, or CRANSTON, AND Ronnnfr voeEvL, or PROVIDENCE, RHoDE Y ISLAND, .AssIGNons To AUTOMATIC GOLD lCHAIN ooiIIrANY,y ,A FIRM oomrosED 0F EDWIN F. M., SPEIDEI. AND ALBERT n. .SPEIDEL BOTH; 0F EDGEWooII- RHODE ISLAND.

CIIAIN.

fAppncann mea December' 9.1926'. srii No. 153,528.

' This invention relates 'to an improved eonstruetion 'of `eli-afin 'or broelet formed ofV a plurality o eXten'dible links.; and the obje'etA of this' invention is' toeonstruct sueh e. 'cham orA bracelet having outer or `guide nnks formed-of sheet steek folded to the desired shape and an inner slide link provided yWith shook-Shaped portion by which it mybe readily oonneetedto and disconnected from the neXt adjacent link of the chain or brace'- let.

provide -i'broadfront Wall, side Wells end portions of the rear Wall with longitudinal opening therein, the reni" Wall portions being r provided with inwardly-extending abutments egal-mst which o'ne end ol the opertheside walls ofA the guide li-nk Jand engage ting spring aets for the purposeo'f pressing the slide' lin'k towardContracted position in its guide link.

- A still further object of the invention is the provision of a slide link formed of elongated band y'shape eind having `one relatively broad 'arm of a Width to be guided lbetween the side Wells ol `its guide link, one 'end of this broad 'varni being -turnedup to forni :i hook, and this sli-de linkbei'ng also'jprovided With a rela-tively 'narrow` y'resilient erin `erranged to slide Ethe spaee formed in the rear Wall of the guide link to el-ose the seine and coinplfete the b'rod bearing rear Wall, ftlie freev end of this narrow :arm engaging therunder side of the hook to prevent it from opening outWardly,y a. single spring being' mounted inv each' link unit off a Width to he guided by both ofthe abutment lips vffhieh extend invvardlyl'froni. the rea-r v'valls' -of this guide link. 1- I these and other objects in view,- thev invention .consists of leertain novelfea'tures T sfide of one of the guide )links s'howingvth'e of. eonstru'etion; a'sfvvill'be more fully 'de'- scribed-7 y appended olain'is.` t

v.In/the aecompfinying drawings:

'Figure l isa perspective view Showing a series of ylinks 'of oui` ini'p'roved Io'rin Conneoted together. A :Figure 2 isal perspective'yievv of the under stilll'urther object of the vinvention is to foldv the stock of the guide link so as'to and particularly klioiited ,Ou-t in` the longitudinal spaee thereinind the abutment fingers in extended portions thereof.v

position on the rez'rrvvall f f Figure 3j is a. bottom vievv yof this guide link. o y 1 Figure 4 is e section-online 1 -4 of Fign mee.;Y ,y y {Figurel is a perspective'view of theslide link showing the narrow 'arin'of `the band as extendingbeneath the hook-shaped portion formed'on'thebroad 'arni of the band. f Figure `6 is abottom vien7 of this slide link. y n .r

Figure 7 i's an vedge elevation of this .slide link.

Figure 8 is `i sect-ionzrlview showing a` plu- I reli'tyof slide links in partiallyextended. po-

sition in tli'e guidelinks. I

Figure lise sectional-edge vie'vv showing the links ofthe chain inthe vsaine relative position es illustrated in Figure 8.

vFigure '10 yis L sectional end View Online 15G- '10 of Fig-ure 9. Y f

hook of the yslide' link' Wardly extended rer 4Wall portions,v the edges vof Wlhlolr are speedapart to provide longitudinallydisposed guide slot therein fnd to provide en elongated band-shaped slidel member `'the Vfront arm of the band being formed of @relatively broad pleteto be guiifde-'d between 'the lside wells of the guide and having e; hook formed adjacent one end thereof,v also' to provide the rear a-rn'i of this band soinevvhzit narrower to fit into the longitudinal Channel or s'pzee in the rear Wall-ofthe guide linlrto close this since. Thisxzi'rrn also :being arranged to exten `for- Wrdlybeneath the 'hook for-ined on the broad rni to preventv they rrn -froni open-y ing-outwardly; this eon's'truction v.of link unit" permittingfa b'rfod'"e/(iil'e'dv4 spring 'to be insented stherein .and v'exterid kthrough lthe openso' serve to be; guided btvveen the Walls of vment of our invention kand showing one means by which-these advantageous results may be accomplished vformed from sheet stock and subsequently L lthe reception `ot suitable `ornamentation,v

H-Vithreterencefto the drawings, l designates the guide link the blank of which 1s folded to lprovide a broad ft'ront wall 1l for portions ot' which front plate arebe'nt back providing.relativelynarrow side Walls 12 and portion oit' these sidesl wallsare turned inwardlytoward each other'leavinga `longitudinally-disposed central space 13 be-y tween them. The edges Vof these side walls at' one end'ot the link are preterablyconnected byan integral bar 14 and at theop-y .v positsl end the rear wall portionskl are prof' vided with fingers 16 which areadapted'to be bent inwardly to provide a pair of abutments for one end of the single spring pres- 1 ently described.

Another element in this link is a slide link member 17 which is'prefe'rably formed in an elongated band shape, the iront arm 18 'of which is of a width to slide between the edge walls 12, of the guide link as best shown in Figure 10.v One end of thisbroad .arm or t plate is turned up vas at 19 into hook form,

the opposite arm 20 oll this band-shaped link being resilient and iseconsiderably-narrower than the frontA arm' 18.thereof. This rear arm being of a Width tor lill the longitudinal space 13 inthe rear wallof the guide link and is preferably set flush with theserear wall portions 15 to complete the full bearing surface of the bracelet link unit on the arm of the wearer, the forwardend 21 of this. arm 20 is arranged to extend under the edge 28 of the hook to prevent it from opening outwardly and this .arm is prevented from being opened inwardly by a spring 24 except when in extended position as'this spring 24: extends across the link beneath'this arm 20 and is guided by and between the side walls ofthe slide link. v n

In `assembling they parts the slidelink is positioned in the guide link by simply sliding one within the other, the single spring 2l is inserted with one end 25 engaging' the band 26 of the slide link, then the outer end of the spring is compressed and the fingers 16 on the end of the rear wall portions are turned inwardly and serve as abutments for the yadjacent end of the spring to hold it by compression and cause it tov press the slide link towards closed position. After these .I link'units have been assembled it isonly necessary to extend the slide member of the unit in its guide link sufficiently beyond the endv of thel spring 24'in order to permit this arm or tonguey 20 to be depressed sufficiently .to be hooked into the end bar 14 on the adjacent end of thenext'guide link l2.

,Our improved `bracelet or chain lis very vsiinplc andl practical in construction and thev unit partsmay be readily assembled and ybe detachably connected' one with the other by simply extending the slide link in Aitsguide link and passingits'hook'end'through the bar lfl on the end of the next adjacentslide' linkwhereby a chain or bracelet may bev assembled of anyldesired Working length.

The lfiioregoing vdescription is directed solely towards the construction illustrated, but. I desire it tobe understood that I re Serve the privilege of resorting toall the Inechanical changesto which the device is sus-` ceptible, the invention being` definedand limited only by the terms of theappended claims. L. i

We claim: e

1; A bracelet `structure*comprising a series of extendible link units, each having a guide link formed of sheet stock oldedto provide a front Walhside walls and portions of a rear wall saidportions bein spaced apart, an elongated band-shaped slide link in said guide link having` a hookr portion and hav,- ing a broad arm member guide'd'between the edge walls'ot the guide link and a narrow arm lying between and flush with said rear wall portions lof said guide link, a 4vspring guided lbetween the side walls ofthe guide link and having one end actingon the fold' of the band slide link, and inturned fingers on veach rear wall portion of the guide. link serving as spaced abutments vfor the opposite end 'of said spring. L w e f 2. In an extendible bracelet chain, aseries of guideV links folded from sheetstock to form front, side andportions of arear Wall,

the edges ,at the rear `,wall vbeing spaced to provide a longitudinal slot therethrough, an elongated band slide link in said guide link having a hook portion adjacent one endand having a broad arm member guided between the sidewalls of the guide link, and a-narrow arm lying flush with and slidable in the space in said rear wall and, adapted to be sprung inwardly` to ,openl the hook portion.

spring abutment members carried by said" guide link ,havingl a hook portion adjacent lll) one end and having a broad arm member guided between the side Walls of the guide link and a narrow arm lying flush with and slidable in the space in said rear wall andv adapted to be sprung inwardly toopen the hook portion, a spring acting to contract the guide link and the slide link and positioned beneath said narrow resilient arm to prevent the resilient arm from being depressed and the hook opened except when in extended position and a member at one end of the guide link to which lthe hook of the adjacent slide link ymay be detachablyonnected. y

4. A bracelet strueture comprising a series of extendible link units, eachhaving a guide link formed of sheet stock 'folded to provide a band-shaped slide link in said guide link having' a hook portion and having a broad arm member guided between the edge Walls l of the guide llnk and a narrow arm lying between and flush with said rear wall por# tions of the guide link, a spring having one end acting' on the fold of the band-shaped' slidel link, and inturnedfingers extending from one of the walls of the guide'link at one end thereof serving as abutments for the j l i y v3() In testimony Vwhereof We aiix oursignaopposite end of said-spring, l I

tures. i v y. CARL AUGENSTEIN. ROBERT VOGEL. f 

